I'm looking to update a large package (with subpackage files called in the same context) to be compatible with version 10. A lot of the functionality surrounds plotting, particularly some custom variants of DateListPlot. To get my desired PlotRanges, ticks and date label formats, the package does a lot of manipulation of dates, so it hits the change in the treatment of DateDifference discussed here.

I wanted to just use the following in the preamble of the package, i.e. between the BeginPackage statement and Begin["`Private`"].

If[$VersionNumber >= 10,
SetSystemOptions["DataOptions" -> 
 {"ReturnQuantities" -> False, "ReturnEntities" -> False}]
];

However this does not actually set the system options. Loading the package and then evaluating

SystemOptions["DataOptions"]

Returns:

{"DataOptions" -> {"ReturnEntities" -> True, 
  "ReturnQuantities" -> True, "UseDataWrappers" -> True}}

The alternative to this would be to add a lot of If[$VersionNumber...] hackery for multiple functions inside the package (and handle DateObject input for each of my custom plot functions, sigh).

So is there any way to set SystemOptions when a package is loaded?

I'm looking to update a large package (with subpackage files called in the same context) to be compatible with version 10. A lot of the functionality surrounds plotting, particularly some custom variants of DateListPlot. To get my desired PlotRanges, ticks and date label formats, the package does a lot of manipulation of dates, so it hits the change in the treatment of DateDifference discussed here.

I wanted to just use the following in the preamble of the package, i.e. between the BeginPackage statement and Begin["`Private`"].

If[$VersionNumber >= 10,
SetSystemOptions["DataOptions" -> 
 {"ReturnQuantities" -> False, "ReturnEntities" -> False}]
];

However this does not actually set the system options. Loading the package and then evaluating

SystemOptions["DataOptions"]

Returns:

{"DataOptions" -> {"ReturnEntities" -> True, 
  "ReturnQuantities" -> True, "UseDataWrappers" -> True}}

The alternative to this would be to add a lot of If[$VersionNumber...] hackery for multiple functions inside the package (and handle DateObject input for each of my custom plot functions, sigh).

So is there any way to set SystemOptions when a package is loaded?

I'm looking to update a large package (with subpackage files called in the same context) to be compatible with version 10. A lot of the functionality surrounds plotting, particularly some custom variants of DateListPlot. To get my desired PlotRanges, ticks and date label formats, the package does a lot of manipulation of dates, so it hits the change in the treatment of DateDifference discussed here.

I wanted to just use the following in the preamble of the package, i.e. between the BeginPackage statement and Begin["``Private`"] (ignore that double backtick, you know what I mean).

If[$VersionNumber >= 10,
SetSystemOptions["DataOptions" -> 
 {"ReturnQuantities" -> False, "ReturnEntities" -> False}]
];

However this does not actually set the system options. Loading the package and then evaluating

SystemOptions["DataOptions"]

Returns:

{"DataOptions" -> {"ReturnEntities" -> True, 
  "ReturnQuantities" -> True, "UseDataWrappers" -> True}}

The alternative to this would be to add a lot of If[$VersionNumber...] hackery for multiple functions inside the package (and handle DateObject input for each of my custom plot functions, sigh).

So is there any way to set SystemOptions when a package is loaded?

I'm looking to update a large package (with subpackage files called in the same context) to be compatible with version 10. A lot of the functionality surrounds plotting, particularly some custom variants of DateListPlot. To get my desired PlotRanges, ticks and date label formats, the package does a lot of manipulation of dates, so it hits the change in the treatment of DateDifference discussed here.

I wanted to just use the following in the preamble of the package, i.e. between the BeginPackage statement and Begin["`Private`"].

If[$VersionNumber >= 10,
SetSystemOptions["DataOptions" -> 
 {"ReturnQuantities" -> False, "ReturnEntities" -> False}]
];

However this does not actually set the system options. Loading the package and then evaluating

SystemOptions["DataOptions"]

Returns:

{"DataOptions" -> {"ReturnEntities" -> True, 
  "ReturnQuantities" -> True, "UseDataWrappers" -> True}}

The alternative to this would be to add a lot of If[$VersionNumber...] hackery for multiple functions inside the package (and handle DateObject input for each of my custom plot functions, sigh).

So is there any way to set SystemOptions when a package is loaded?